Split pulley.



m. 816,117. IPA'TENTIED MAR. .27, 1906'. I 0. A. NELSON. Q

QPLIT PULLEY.

APPLICATION FILED MAR.2B, 1905.

- awoe wto'b UNIT D STATES PATENT OFFIOE.

OTTO A. NELSON, OF BALLARD, WASHINGTON.

'SPLIT PULLEY.

To all whom it may concern).- I Be it known that I, OTTO A. NELSON, acitizen of the United States, residing at Ballard,

in the county of King and State of Washington, have invented-certain newanduseful Improvements in Split Pulleys, of which the following is aspecification.

My invention relates to improvements in split pulleys; and the primaryobject thereof is to construct an improved pulley of this type ofsections which can be slid onto the shaft from opposite sides thereof,said sections being so formed that they, when secured together, will befri ctionally' held onto a bushing mounted on the shaft.

A further object is to provide a comparatively simple and inexpensiveconstruction embodying but few parts and which are not liable to bereadily injured or become deranged.

Further, the invention consists in the parts,

combination of parts, and the relative arrangement thereof, as set forthin the follow ing description and particularly pointed out in theappended claims.

Inthe accomp anymg throughout the several views, Figure 1 is a side viewof one of the pulley-sections looking at the outer face thereof andshowing the rim-section removed therefrom. Fig. 2 is a similar view ofthe other pulley-section with its rim-section removed. Fig. 3 is an edgeview of the last-named removable-rim-sec tion. Figs. 4 and 5 are detailplan views looking at the inner faces of the pulley-sections. Fi 6 is aview in perspective of one of the pul ey-sections; Fig. 7 is across-sectional view of the pulley, and Fig. 8 is a detail view inperspective of the split bushing and the sha'fton which it is mounted.

My improved pulley comprises two interlockin sections 1 and 2, formedwith tapered centra openings 3, adapted to receive the bushing 4, andeach section is formed with a' slot 5, which extends from the respectiveopenings 3 to'the edges of the'sections. Each section is also formedwith recesses 6 and pro jections 7, preferably of segmental form, andwhich arediametrically opposite each other, and the projection 7 of onesection is adapted to fit snugly in the recess 6 of the other see-- tion, thereby preventing any tendency of one section slipping on the otherwhen the pulley is being subjected to great strain. The projections 7are formed with ribs, as 8, which Specification of Letters Patent. 1Application filed March 28,1905. Serial No. 262,585.

drawings, in which i .like numerals of reference indicate like partsPatented March 27, 1eoe project into and are snu ly received in therespective slots 5 of the pu Icy-sections 1 and 2.

Mounted in the openings 3 of the respective pulley-sections is a bushing4, and this bushing is tapered from its central portion to its 7opposite ends and is formed in longitudinal sections. (See Fig. 8.)Consequently when it is desired to, mount the pulley on the shaft(indicated at 9) said sections can be readily arranged on the shaftafter the pulley-sections 1 and 2 have been slid thereon from oppositesides and have one of their endportions I forced into the centralopening 3 of one of the pulley-sections. The other pulley-section canthen be moved toward the first-named pulley-section and receive theother ends of the pulley-sections 1 and 2 thereby held in lockedposition suitable additional securingbolts, as 12, are passed throughthe sections to securely hold them together. I

In order that the pulley-sections will not be materially weakened by theformation of slots'5 therein, I provide removable rim-sec- I tions 13,which fit over said slots, the same being arranged on the outer faces ofthe sec tions and having end wings, as 14, which are snugly received inrecesses 15, formed in the rim on opposite sides of said slots 5.Suitable means, as screws 15, secure these sections in position, and theintermediate screw pref- I erably passes through theadjacent opening 5and is secured in the rib 8 when the same is fitted therein. v f

In the drawings I have shown a construction which comprises but fewparts, and these can be readily assembled when it is desired to mountthe pulley on a shaft.

Having thus described my invention,'what I claim as new, and desire tosecure byLetters Patent of the United States of America, 1s

1. A split pulley formed of two sections having their inner facesprovided with oppositely-disposed'recesses and projecting portions, therecess of one section receivmg the projecting portion of the othersection, said IIO formed With a central opening and a slot lead- 10 ingtherefrom, there being ribs secured to said sections and normallyfitting in said slots.

In testimony whereof I allix my signature in presence of two Witnesses.

OTTO A. NELSON. Witnesses GEORGE R. TENNANT, HOWARD D. HUGHEs.

